Boiler make-up water heating device

Abstract

The utility model relates to a boiler make-up water heating device which comprises a make-up water conveying pipeline used for being connected with a regeneration tower and conveying desalting make-up water to the regeneration tower, and a heat exchange device, a water storage tank and a water pump are sequentially connected to the make-up water conveying pipeline in the make-up water conveying direction. The heat exchange device comprises a plate heat exchanger and a water cooler, the plate heat exchanger comprises a first steam inlet, a first steam outlet, a water inlet and a water outlet, the water inlet is communicated with the make-up water conveying pipeline through a first connecting pipeline, and a first valve switch is installed on the first connecting pipeline; the water outlet is communicated with the make-up water conveying pipeline through a second connecting pipeline, and a second valve switch is mounted on the second connecting pipeline; by additionally arranging the heat exchange device, the water storage tank, the water pump and other structures and combining the improvement of the water circulation mode, the supplemental water can be heated, and the resin regeneration effect is improved.

Description

Technical Field

[0001] The utility model relates to a heating device, in particular to a heating device for boiler make-up water. Background Art

[0002] In winter, the ambient temperature is low, which makes the temperature of the make-up water supplied to the regeneration tower low, resulting in difficult resin regeneration in the regeneration tower. Difficult resin regeneration will lead to increased chemical corrosion of the system, affecting the safe and stable operation of the system. In order to increase the temperature of the make-up water and improve the resin regeneration effect, the inventor proposed a heating device for boiler make-up water. After the first-phase boiler make-up water was put into use, the resin regeneration effect was significantly improved. Content of the Utility Model

[0003] The utility model aims at the deficiencies of the prior art and provides a heating device for boiler make-up water.

[0004] The utility model is realized by the following technical solutions: a heating device for boiler make-up water is provided, which includes a make-up water delivery pipeline for connecting to the regeneration tower and delivering desalted make-up water to the regeneration tower. Along the make-up water delivery direction, a heat exchange device, a water storage tank and a water pump are sequentially connected on the make-up water delivery pipeline; the heat exchange device includes a plate heat exchanger and a water cooler. The plate heat exchanger includes a first steam inlet, a first steam outlet, a water inlet and a water outlet. The water inlet is communicated with the make-up water delivery pipeline through a first connection pipeline, and a first valve switch is installed on the first connection pipeline. The water outlet is communicated with the make-up water delivery pipeline through a second connection pipeline, and a second valve switch is installed on the second connection pipeline; a third valve switch is installed on the make-up water delivery pipeline, and the third valve switch is located between the first connection pipeline and the second connection pipeline; the first steam outlet is connected to the second steam inlet of the water cooler through a pipeline, and the second steam outlet of the water cooler is communicated with the make-up water delivery pipeline through a pipeline.

[0005] Preferably, in order to realize the mixing and storage of the heat exchange water, stirring teeth are installed in the water storage tank, and a driving motor for driving the stirring teeth to rotate is installed on the top surface of the water storage tank.

[0006] Preferably, in order to detect the water temperature and water level in the water storage tank, a temperature sensor and a liquid level sensor are installed in the water storage tank.

[0007] Preferably, a fourth valve switch is installed on the make-up water delivery pipeline, and the fourth valve switch is located between the regeneration tower and the water pump.

[0008] Preferably, if the temperature rise of the make-up water does not meet the standard, it can be further heated. A return pipe is connected to the make-up water delivery pipeline between the water pump and the fourth valve switch, a fifth valve switch is installed on the return pipe, and the other end of the return pipe is connected to the make-up water delivery pipeline, and the connection position is behind the first connection pipeline.

[0009] Preferably, a water distribution pipe is connected to the makeup water delivery pipeline between the fourth valve switch and the regeneration tower, and the water distribution pipe is connected to the alkali regeneration ejector.

[0010] Preferably, in order to ensure the one-way circulation of the condensate water, a booster pump and a sixth valve switch are connected to the pipeline connecting the second steam outlet and the makeup water delivery pipeline.

[0011] The beneficial effects of the present utility model are as follows:

[0012] By adding structures such as a heat exchange device, a water storage tank, and a water pump, and combining with the improvement of the water circulation mode, this application can heat up the makeup water and improve the resin regeneration effect. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the pipeline circulation of the present utility model;

[0014] As shown in the figure:

[0015] 1. Makeup water delivery pipeline, 2. First connection pipeline, 3. First valve switch, 4. Second valve switch, 5. Second connection pipeline, 6. Plate heat exchanger, 7. Water cooler, 8. Third valve switch, 9. Return water pipe, 10. Water storage tank, 11. Stirring teeth, 12. Temperature sensor, 13. Liquid level sensor, 14. Driving motor, 15. Water pump, 16. Fifth valve switch, 17. Fourth valve switch, 18. Water distribution pipe, 19. Alkali regeneration ejector, 20. Regeneration tower, 21. Second steam inlet, 22. Second steam outlet, 23. First steam inlet, 24. First steam outlet 25. Booster pump, 26. Sixth valve switch. Detailed Embodiments

[0016] To clearly illustrate the technical features of this solution, the following describes this solution through specific embodiments.

[0017] Such as Figure 1As shown in the figure, the utility model includes a make-up water delivery pipeline 1 for connecting to a regeneration tower 20 and delivering desalted make-up water to the regeneration tower 20. Along the make-up water delivery direction, a heat exchange device, a water storage tank 10, and a water pump 15 are sequentially connected on the make-up water delivery pipeline 1. The heat exchange device includes a plate heat exchanger 6 and a water cooler 7, and both the plate heat exchanger 6 and the water cooler 7 adopt existing structures. The plate heat exchanger 6 includes a first steam inlet 23, a first steam outlet 24, a water inlet, and a water outlet. The water inlet is connected to the make-up water delivery pipeline 1 through a first connection pipeline 2, and a first valve switch 3 is installed on the first connection pipeline 2. The water outlet is connected to the make-up water delivery pipeline 1 through a second connection pipeline 5, and a second valve switch 4 is installed on the second connection pipeline 5. A third valve switch 8 is installed on the make-up water delivery pipeline 1, and the third valve switch 8 is located between the first connection pipeline 2 and the second connection pipeline 5. The first steam outlet 24 is connected to the second steam inlet 21 of the water cooler 7 through a pipeline, and the second steam outlet 22 of the water cooler 7 is connected to the make-up water delivery pipeline 1 through a pipeline. The steam is cooled by the water cooler 7 to form condensed water, which flows into the make-up water delivery pipeline 1.

[0018] In this embodiment, in order to ensure the one-way circulation of the condensed water, a booster pump 25 and a sixth valve switch 26 are connected to the pipeline where the second steam outlet 22 is connected to the make-up water delivery pipeline 1.

[0019] In this embodiment, in order to realize the mixing and storage of the heat exchange water, stirring teeth 11 are installed in the water storage tank 10, and a driving motor 14 for driving the stirring teeth 11 to rotate is installed on the top surface of the water storage tank 10. At the same time, in order to detect the water temperature and water level in the water storage tank 10, a temperature sensor 12 and a liquid level sensor 13 are installed in the water storage tank 10.

[0020] In this embodiment, a fourth valve switch 17 is installed on the make-up water delivery pipeline 1, and the fourth valve switch 17 is located between the regeneration tower 20 and the water pump 15.

[0021] In this embodiment, if the temperature rise of the make-up water does not meet the standard, it can be further heated. A return pipe 9 is connected to the make-up water delivery pipeline 1 between the water pump 15 and the fourth valve switch 17, a fifth valve switch 16 is installed on the return pipe 9, and the other end of the return pipe 9 is connected to the make-up water delivery pipeline 1, and the connection position is behind the first connection pipeline 2.

[0022] In this embodiment, a water distribution pipe 18 is connected to the make-up water delivery pipeline 1 between the fourth valve switch 17 and the regeneration tower 20, and the water distribution pipe 18 is connected to an alkali regeneration ejector 19.

[0023] In this embodiment, the operations of the first valve switch 3, the second valve switch 4, the third valve switch 8, the fourth valve switch 17, the fifth valve switch 16, the sixth valve switch 26, the water pump 15, and the drive motor 14 can be manually operated by a human or can be interlocked and controlled with the aid of a programmable logic controller.

[0024] During specific use, when it is used in spring, summer, and autumn, the heat exchange device is not put into operation. The corresponding first valve switch 3, second valve switch 4, and sixth valve switch 26 are all closed, and the third valve switch 8 is opened. The demineralized makeup water in the makeup water delivery pipeline 1 directly enters the water storage tank 10. The corresponding fourth valve switch 17 is opened, and the fifth valve switch 16 is closed. The water pump 15 pumps the water in the water storage tank 10 into the regeneration tower 20. When it is used in winter, the environmental temperature is low, and the heat exchange device is put into operation. The corresponding first valve switch 3, second valve switch 4, and sixth valve switch 26 are all opened, and the third valve switch 8 is closed. The makeup water enters the water storage tank 10 and is temporarily stored after being heated and raised in temperature by the plate heat exchanger 6. The stirring teeth 11 rotate to continuously stir and mix the input makeup water. When the water level rises to the position where the liquid level sensor 13 is located, the temperature sensor 12 detects the water temperature. If the water temperature meets the standard, the fourth valve switch 17 is opened, and the fifth valve switch 16 is closed. The water pump 15 pumps the water in the water storage tank 10 into the regeneration tower 20. If the water temperature does not meet the standard, the fourth valve switch 17 is closed, the fifth valve switch 16 is opened, and the water pump 15 pumps the water in the water storage tank 10 back into the heat exchange device through the return pipe 9 for heating.

[0025] By adding structures such as a heat exchange device, a water storage tank 10, and a water pump 15 and combining with the improvement of the water circulation mode, this application can heat and raise the temperature of the makeup water and improve the resin regeneration effect.

[0026] Of course, the above description is not limited to the above examples. The technical features not described in this utility model can be realized by or adopted from the prior art and will not be elaborated here. The above embodiments and the drawings are only used to illustrate the technical solution of this utility model and are not a limitation to this utility model. The technical solution of this utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions, or substitutions made by those of ordinary skill in this technical field within the scope of the essence of this utility model do not depart from the purpose of this utility model and should also belong to the protection scope of the claims of this utility model.

Claims

1. Boiler feed water heating device, characterized in that: It includes a feed water delivery pipeline for connecting a regeneration tower and delivering desalinated feed water to the regeneration tower, and a heat exchange device, a water storage tank and a water pump are sequentially connected on the feed water delivery pipeline along the feed water delivery direction; the heat exchange device includes a plate heat exchanger and a water cooler, and the plate heat exchanger includes a first steam inlet, a first steam outlet, a water inlet and a water outlet, the water inlet is connected to the feed water delivery pipeline through a first connecting pipeline, a first valve switch is installed on the first connecting pipeline, the water outlet is connected to the feed water delivery pipeline through a second connecting pipeline, and a second valve switch is installed on the second connecting pipeline; a third valve switch is installed on the feed water delivery pipeline, and the third valve switch is located between the first connecting pipeline and the second connecting pipeline; the first steam outlet is connected to the second steam inlet of the water cooler through a pipeline, and the second steam outlet of the water cooler is connected to the feed water delivery pipeline through a pipeline.

2. The boiler feed water heating device according to claim 1, characterized in that: A stirring tooth is installed in the water storage tank, and a driving motor for driving the stirring tooth to rotate is installed on the top surface of the water storage tank.

3. The boiler feed water heating device according to claim 2, characterized in that: Install temperature sensors and liquid level sensors in the water storage tank.

4. The boiler feed water heating device according to claim 1, characterized in that: A fourth valve switch is installed on the makeup water delivery pipeline, and the fourth valve switch is located between the regeneration tower and the water pump.

5. The boiler feed water heating device according to claim 4, characterized in that: A return pipe is connected to the make-up water delivery pipeline between the water pump and the fourth valve switch, and a fifth valve switch is installed on the return pipe. The other end of the return pipe is connected to the make-up water delivery pipeline, and the connection position is located behind the first connecting pipeline.

6. The boiler feed water heating device according to claim 5, characterized in that: A water distribution pipe is connected to the feed water delivery pipeline between the fourth valve switch and the regeneration tower, and the water distribution pipe is connected to the alkali regeneration ejector.

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